Lemma 3.2 [1]}
Let \( f \)  be a meromorphic function of finite order, and \( \eta _1 \) , \( \eta _2 \)  be two distinct arbitrary complex numbers. Assume that \( \sigma \)  is the order of \( f \) , then for each \( \epsilon >0 \) , we have
\(m\left(r,\frac{f(z+\eta _1)}{f(z+\eta _2)}\right)=O\left(r^{\sigma -1+\epsilon }\right). \) 

